ENHANCED PINNING BY 2ND-PHASE PRECIPITATES IN SR RICH BI2SR2CACU2O8 CERAMICS

Authors
MAJEWSKI P ELSCHNER S ALDINGER F
Citation
P. Majewski et al., ENHANCED PINNING BY 2ND-PHASE PRECIPITATES IN SR RICH BI2SR2CACU2O8 CERAMICS, Physica. C, Superconductivity, 249(3-4), 1995, pp. 234-240
Citations number
28
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
249
Issue
3-4
Year of publication
1995
Pages
234 - 240
Database
ISI
SICI code
0921-4534(1995)249:3-4<234:EPB2PI>2.0.ZU;2-5
Abstract
From a consideration of the phase equilibrium diagram of the system Bi 2O3-SrO-CaO-CuO, a simple annealing procedure was developed to precipi tate Bi2+xSr2-xCuO6+d,Sr14Cu24O41-x and Bi2Sr3O6 in high-temperature s uperconducting ''Bi2Sr2CaCu2O8'' ceramics. The transformation results in a four-fold increase of the critical current density at 0.5 to 1 T, which is believed to reflect the increased pinning properties of thes e ceramics by second-phase precipitates.